Answer :
1. The bed was made by Alfred every morning.
2. The letter is being written by Sandra.
3. The ball was being chased by cat.
4. The dinner was prepared by Alex for his family.
5. The cake was baked by my Aunt.
These sentence are transformed in Passive voice.
Generally speaking, using the active voice strengthens, clarifies, and—you guessed it—makes your writing more dynamic. The verb in the sentence's subject performs the action of something that the subject is. The subject is affected by another person doing the verb in the passive voice. The voice described in the previous two phrases is used, in case you weren't paying attention. However, using the passive voice is acceptable. In fact, there are circumstances in which it is useful.
To learn more about Passive voice here
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